Retired Document
Important: This document may not represent best practices for current development. For current information, see About Apple File System.
Volume Format Comparison
Mac OS Extended (HFS+) | Apple File System (APFS) | |
|---|---|---|
Number of allocation blocks | 232 (4 billion) | 263 (9 quintillion) |
File IDs | 32-bit | 64-bit |
Maximum file size | 263 bytes | 263 bytes |
Time stamp granularity | 1 second | 1 nanosecond |
Copy-on-write | ✔ | |
Crash protected | Journaled | ✔ |
File and directory clones | ✔ | |
Snapshots | ✔ | |
Space sharing | ✔ | |
Native encryption | ✔ | |
Sparse files | ✔ | |
Fast directory sizing | ✔ |
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